Wax Cotton Jewelry Cord (Round) : Waxed cotton cord is great for professional jewelry making. This cord is easily knotted and braided just like hemp but with a clean look and feel. Round wax cords or polished cords are basically cotton braided cords with round or oval cross sections. Various strands of cotton yarn of different counts are braided together to give them the lateral stability. Braided cords are then coated with wax giving it a shiny, leather-like appearance.